Land Use Change in Tianjin from 2000 to 2010 Based on GIS

In recent years, land problems have begun to seriously affect people's lives, production and the sustainable development of society. Based on GIS, three phases of TM remote sensing images - from August 2000, August 2006 and July 2010 - are explained and classified to get a diagram of land use type and related information. The relevant land data of Tianjin from 2000 to 2010 (from the two sides of quantity and quality) combined with the analysis of the changing process of land use/coverage using the dynamic of land use, land use degree and transfer matrix. In order to provide the reference for a land use plan of this city, the research shows that all kinds of land use areas have changed in differing degrees from 2000 to 2010. Salt pan, forest land, construction land and unused land have increased the area of cultivated land and waters have reduced. The main trend is the expansion of construction land (756.99 hm²) and the reduction of cultivated land, the construction land. Various types of land use are in the constant transfer from each other. The main direction is the transfer from cultivated land, grass land, salt pan, water and unused land to construction land.